The Scent of Death Discovered

In incidents such as fires or earthquakes, dogs assist rescue teams in identifying human remains. But how are dogs able to distinguish between the remains of a human and those of other organisms? According to the American Advanced Sciences Association, researchers believe that the human body emits a specific scent during decomposition that is different from the scent of other organisms. Recent research findings indicate that recognizing and analyzing this specific chemical compound and training dogs to identify it will soon become one of the primary methods for locating human remains. This is not the first time the topic of 'the scent of death' has attracted scientists' attention. For over 10 years, various studies have been conducted on the specific scent produced by deceased bodies. However, none of these studies have been able to distinguish the unique scent of humans from that of other organisms. According to the Daily Mail, in the latest research conducted by forensic specialists, remains of 26 animals and six humans were placed in special containers, and their decomposition process was studied for six months. During this time, the gases emitted from the decaying tissues of these bodies were regularly collected and analyzed. Researchers found that these gases could be used to differentiate human and pig remains from those of mice, rabbits, turtles, frogs, fish, chickens, sparrows, etc. Human and pig remains emit eight distinct esters that can be identified separately from other animals. Additionally, the human body produces five different types of esters that distinguish it from pigs. Eileen Rozeer, a forensic toxicologist and the principal investigator of this project, believes that these new findings may even lead to the invention of a portable tool for identifying human remains. The 'Belgian Natural Disaster Victim Identification Team' had sought assistance from Eileen Rozeer and her research team to find ways to train dogs specifically for identifying remains. One of the criticisms of this research's findings is the difference between the decomposition of body tissues in a controlled laboratory environment and natural environments, which may affect the decomposition stages of the human body and the resulting gases emitted. Furthermore, the decomposition of a complete body in a natural state may differ from the decomposition of only a few organs or small tissues in laboratory test tubes.